diff --git a/CMakeLists.txt b/CMakeLists.txt
index f7895cb8..20729385 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -400,7 +400,6 @@ list (
     term.hpp
     time.cpp
     time.hpp
-    time.ipp
     tuple.cpp
     tuple.hpp
     typeidx.cpp
diff --git a/time.hpp b/time.hpp
index 60c12b1a..24ffed5a 100644
--- a/time.hpp
+++ b/time.hpp
@@ -25,15 +25,24 @@
 
 
 namespace util {
-    // ------------------------------------------------------------------------
+    ///////////////////////////////////////////////////////////////////////////
     uintmax_t nanoseconds (void);
 
-    template <typename T>
-    void sleep (std::chrono::duration<T,std::nano>);
 
+    //-------------------------------------------------------------------------
+    template <typename T>
+    void sleep (std::chrono::duration<T,std::nano> dt)
+    {
+        auto nano = std::chrono::duration_cast<std::chrono::nanoseconds> (dt);
+        sleep (nano.count ());
+    }
+
+
+    //-------------------------------------------------------------------------
     void sleep (uint64_t ns);
 
-    // ------------------------------------------------------------------------
+
+    ///////////////////////////////////////////////////////////////////////////
     class delta_clock {
         public:
             delta_clock ();
@@ -46,7 +55,8 @@ namespace util {
             } time;
     };
 
-    // ------------------------------------------------------------------------
+
+    ///////////////////////////////////////////////////////////////////////////
     class period_query {
         public:
             explicit period_query (float seconds);
@@ -60,7 +70,8 @@ namespace util {
             } m_time;
     };
 
-    // ------------------------------------------------------------------------
+
+    ///////////////////////////////////////////////////////////////////////////
     class rate_limiter {
         public:
             explicit rate_limiter (unsigned rate);
@@ -72,7 +83,8 @@ namespace util {
             unsigned m_target;
     };
 
-    // ------------------------------------------------------------------------
+
+    ///////////////////////////////////////////////////////////////////////////
     class polled_duration {
         public:
             polled_duration (std::string name, uint64_t interval);
@@ -90,6 +102,4 @@ namespace util {
     };
 }
 
-#include "time.ipp"
-
-#endif // __UTIL_TIME_HPP
+#endif
diff --git a/time.ipp b/time.ipp
deleted file mode 100644
index a1c1604b..00000000
--- a/time.ipp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Copyright 2016 Danny Robson <danny@nerdcruft.net>
- */
-
-#ifndef __UTIL_TIME_IPP
-#define __UTIL_TIME_IPP
-
-template <typename T>
-void
-util::sleep (std::chrono::duration<T,std::nano> dt)
-{
-    auto nano = std::chrono::duration_cast<std::chrono::nanoseconds> (dt);
-    sleep (nano.count ());
-}
-
-#endif